AutoCodes – GMC – C12E5 GMC

C12E5 GMC Code - Brake Pedal Position Sensor Reference Circuit

Quick Answer

The Electronic Brake Control Module (EBCM) monitors the Brake Pedal Position Sensor. Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C12E5 GMC indicates Brake Pedal Position Sensor Reference Circuit.
Common causes: Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 837

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code C12E5 GMC Description

The Electronic Brake Control Module (EBCM) monitors the Brake Pedal Position Sensor. The EBCM sets the OBDII code when the Brake Pedal Position Sensor is not to factory specifications.

OBDII Code C12E5 GMC - Brake Pedal Position Sensor Reference Circuit - AutoCodes.com — C12E5 GMC Code - Brake Pedal Position Sensor Reference Circuit

What does this mean?

What are the Possible Causes of the DTC C12E5 GMC?

Faulty Brake Pedal Position Sensor
Brake Pedal Position Sensor harness is open or shorted
Brake Pedal Position Sensor circuit poor electrical connection

How to Fix the DTC C12E5 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C12E5 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C12E5 GMC code?

Need more information on how to fix the C12E5 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C12E5 GMC code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C12E5 GMC Code

1. What are the common symptoms of OBDII code C12E5 in a GMC related to the Brake Pedal Position Sensor Reference Circuit?

- Common symptoms include issues with the brake lights, cruise control malfunction, and potential difficulty shifting out of park.

2. What are the possible causes of OBDII code C12E5 in a GMC?

- The code C12E5 can be triggered by a faulty brake pedal position sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's reference voltage.

3. How can I diagnose the Brake Pedal Position Sensor Reference Circuit issue causing OBDII code C12E5 in my GMC?

- You can start by visually inspecting the sensor and its wiring for any visible damage. Using a multimeter, you can test the sensor's resistance and voltage output to determine if it is functioning correctly.

4. Can I drive my GMC with OBDII code C12E5 related to the Brake Pedal Position Sensor Reference Circuit?

- It is not recommended to drive your vehicle with this code present, as it can affect crucial safety systems like the brake lights and potentially lead to further issues.

5. How can I repair OBDII code C12E5 in my GMC caused by the Brake Pedal Position Sensor Reference Circuit?

- Repair options include replacing the brake pedal position sensor, repairing or replacing damaged wiring and connectors, and resetting the trouble code using an OBDII scanner.

6. Is it possible for a DIY enthusiast to fix OBDII code C12E5 in a GMC at home?

- Yes, if you have some experience with automotive repairs and the necessary tools, you may be able to diagnose and repair the issue related to the Brake Pedal Position Sensor Reference Circuit at home.

7. Are there any preventive measures to avoid triggering OBDII code C12E5 in a GMC?

- Regularly checking the brake pedal position sensor and its wiring for any signs of wear or damage can help prevent issues that may lead to the code C12E5 being triggered.

8. Can a malfunctioning Brake Pedal Position Sensor Reference Circuit impact the overall performance of my GMC?

- Yes, a faulty sensor or circuit can affect the performance of safety systems like the brake lights and cruise control, as well as potentially impacting the vehicle's shifting functionality.

9. How long does it typically take to repair OBDII code C12E5 related to the Brake Pedal Position Sensor Reference Circuit?

- The repair time can vary depending on the exact cause of the issue, but it usually takes a few hours to diagnose and repair the problem.

10. Should I clear the OBDII code C12E5 after repairing the issue with the Brake Pedal Position Sensor Reference Circuit in my GMC?

- Yes, it is recommended to clear the trouble code using an OBDII scanner after repairing the underlying problem to ensure the issue has been resolved.